Visits to emergency rooms are up; health officials say holiday travel and gatherings are helping spread the virus. The H3N2 ...

Flu activity in suburban Cook County jumped from “low” to “high” during the week ending in Dec. 20, according to health ...

COVID-19 and RSV are relatively low in Chicago and Cook County, but it's the flu that's prompting health officials to sound ...

This flu season seems to be getting worse by the day, according to health officials. The bulk of this year's cases are being ...

While 2025 is winding down, flu cases are continuing to rise as people prepare to gather for New Year's Eve celebrations.

A new form of the flu, which is highly contagious and aggressive, is sweeping the nation this season. A mutation of influenza ...

A Northwestern doctor said it's still too soon to tell if the flu shot protects against this new strain called subclade K.

A new strain of the flu is spreading across the country this season. Health officials say a mutation of Influenza A H3N2, ...

Chicago-area health officials are expecting a bad flu season and pushing for influenza and COVID vaccinations despite ...

A new flu variant is known as “subclade K,” and led to early outbreaks in the United Kingdom, Japan and Canada.

Chicago-area healthcare providers are stocked up with influenza and COVID-19 vaccines, but some doctors say it's been a tough ...